Durand



(No Model.)

' C. DANDURAND su L. M. LAFRANGE.

QUARTZ GRUSHING MACHINE.

A.Pentented Jan. 29,

WI TNESSEIS' Jllorucy Y tached to the revolving UNITED STATES `PATENT OFFICE., *l

CYPRIEN DANDURAND AND LOUIS M. LAFRANOE, OF VIRGINIA CITY, NEVADA, SAID LAFRANOE'ASSIGNOR OF ONE-THIRD TO SAID DAN- DURAND.

QUART-z-CRUSHING MACHINE.

SP SCIFICATIONforming part of Letters Patent No. 292,543,

dated January :9, 1884.

Application lcd September 529, 1881i. (Xo mode-1.)

'o all whom 'it may concer/1,:

Be itknown that we, CYPRIEN DANDUEAND and LoUIs M. LAERANCE, each and both citi- I upper half of the drum A A is aseries of holes zens of the United States, and residing inl Virginia Oily, county of Storey,'and 4Stale of Nevada, have invented a new and useful ing is a specification.

Our invention relates quartz-crushing machinery,- in which rotary arms attached to a revolving cylinder operate in conjunction with springs and gangs of Quartz-Crushing Machine, of which the fellowto improvements in V rollers and fall at regular intervals upon the4 material to be reduced; andthe objects of our improvements are, iirst, tosubstitute arms attached to a revolving cylinder for the stamps now in use; second, by the use of springs atcylinder and acting directly upon the arms, to add the force of the springs to the Weight of the arms; third, by the use of the rollers, with which the arms in passing come in contact, to lessen the friction in the Working of the machine. We attain these objects by the mechanismk illustrated in the` drawings, in Whic Figurev 1 is a vertical section of themachine, with the side of the frame of the machine and the side of the frame of the rollers removed. Fig. 2 is a top view of the machine, with the upper half of the drum or cover removed. Fig. 3 is a view of the inner drum or cylinder, with the arms and springs attached. Fig. 4 is a view of the gang of rollers and themanner in which the rollers are relatively placed in one frame.

-The same letters refer to the same or similar parts throughout the several views.

The drum A A and its leg or standard B,

secured to plate C, constitute the frame-work cylinder F, and is connected on the outside of the drum A A of the bearings ofthe drumA with the crank G, and the ltops are secured to the lower part A by the screws H H. In the I in common use.

under the lip a, for the conveyance of water necessary to assist in reducing ores to pulp by the,{-wet process,7 so called, and said holes are so situated as to also wash down the dbris clinging to the arms L L L. The opening in the drum A A (marked c) is a chute, through which the ore is fed to the arms L L L, and it extends the whole Width of the machine. A

slide, I, movable vertically in cleats attached to the drum A A, covers the chutecwhen not in use in receiving ore. In` the lowerfend of the slide I are holes at e, to permit the discharge of the slime, as in the battery-screen The slide I is conveniently moved by a handle, It.

Y T e purposes ofthe outer drum, A A, are to provide a frame and cover for the machinery, and to provide a receptacle for water and for the oro, as well as to coniine the water and pulp thrown about by the action of the arms L L L. For convenience, the outer drum, A A, is divided into twopsections, upperand lower, the upper section being removable-at The cylinder F is fastened to the axle E by spokes j j j on'the inside of the cylinder, it being otherwise hollow. Upon the outer surface of the cylinder F is fastened the series of arms L L L, the number and size of the same being regulated by the size of the cylinder F and the corresponding size of the machine. The arms L L L are made of metal and fastenedv to the cylinder F by means of lugs k k k, through which run bolts l Z l, to allow of removal and replacement. The arms L L L, in being pressed toward the cylinder F, and in falling upon the ore to be reduced, turn easily upon the bolts Z Z Z. Under'the arms L VL Lare springs K K K, which are fastened to These:v l 90 ends of the arms y L L L, when in contact with the endless chains of rollers O O, cause such rollers to revolve separately and in combination with the revolution of the rollers m m, and when in contact with rollers Q Q also cause 'them to revolve. The springs K lil give force to and regulate the fall of the arms L L L, first upon the endless chains of rollers O O and. the rollers Q Q, and then upon the material to bereduced. No two of the arms L L L fall simultaneously. The revolution of the cylinder F and the frequency of the fall of the arms L L L are regulated by the operator or by the force of the motive power. The arms L L L are longitudinally of concave form ou their inner and of uected with each convexformon their outer surfaces. The sides are parallel surfaces, except that they taper at l, one extremity to iit on thelugs lalala. rlhe base l of each arm L farthest from the lug 7c is a square plain surface, forming` an angle of about eighty degrees with the outer surface of the arm. The bands N N are of metal, and al;- tached to the plate C back of the place of fall of the arms L L L, then pass around under the l drum A A and over the arms L L L, and are l connected with the framework of the rollers my by a rod running through the frame-work l of the rollers m. (Marked p.) rlhe bands X i N, Fig. 2, areintended tokcep the armsL LL in l place and guide them to the rollers; also to prevent the arms L L L from striking the top ofthe frame A A. rlhey serve alsoto strengthen the Connection ofthe frame ofthe machine with the frame of the rollers.

Thebeam O,ll`i ej.4,passes through the f rame` work M of the rollers and into the sides otl the frame of the machine, and is the main connection of the frame-work of the rollers. There are four separate sets of rollers, each set ineluding,` an endless chain of rollers, O, rollers m m, and the rollers Q. Between each set of rollers is a partition of iron or wood, which, with the. outer covering on each side, forms the framework M of the rollers. Through this framework M pass the beam O,the rod p', the axles a In` of the rollers onv ym, and the axle p of the rollers QQ. The rollers Q Q act independently ol' the endless chains of rollers O O, and the use of the rollers Q Q is to after they O O, and from the fall upon the material to be reduced.

receive the arms L L L leave the endless chains of rollers rollers Q Q the arms L L L The frame M of the sets of rollers is also firmly attached to the sides of the lower part of the framework of the machine, by cleats and screws, at c c. rllhe smallest rollers are connected in endless chains by strips o o o, each strip connecting one roller with the next roller on either side, the axle g of each smallroller in the endless chains passing through one end of each strip and acting as a bolt upon which the strips more readily when in revolution. The use of the rollers m m is to add another rotation, in combination with the rotation of the endless chains of rollers O O, and to rcduee friction. The rollers m n are not conother, except as being in the same frame M. The rollers Q Q are larger, and have a larger axle than the rollers in the endless chains O O, and, being stronger and iirmer, form a better resistance to the arms L L L and the springs K K before such arms L L L are suddenly released and fall upon the material to be reduced. The endless chains of rollers being constructed with smaller rollers than the rollers Q Q, offer a more uniform surface for the pressure of the arms L L than larger rollers would offen; but the endless chains of rollers O O and the rollers m m may be dispensed with by using a sequence of separate rollers, as Q Q, each acting upon its own axle, in place of each endless chain of rollers and the two rollers m m in combination, four such sequences of larger rollers being set in the same frame M. All the rollers are made of iron or other metal. The outer drum, A A, should be substantiallyT constructed t0 resist the vibration of the operating parts ol' the machine.

\\'e claim as our invention- The outer drum, A A, with its plate C, the cylinder F, the rotary arms L L L, and the springs K 1i, in combination with the endless chains of rollers O O, the rollers m. m, the rollers Q Q, and the frame M, as hereinbeforc described, and for the purposes set forth.

his CYPRIEN l`)ANDL'ltAXl).

mark. LOUIS M. LAFRANCE.

\\ il nesses:

J. (l. LEGRIs. E. S. FAnniN-c'rox. 

